Rotary valve



VVage is obviated.

THOMAS oGDEN ,AND

LAYtroN WARE, lor RAWLINS, WYOMING.

ROTARY VALVE.

T 0 all wmmt may concern.' y Y Be it known that we, THoMAs OGDEN andLAYTON l/VARE, citizens of the United States, residing Vat Rawlins, inthe county of Carbon and State of Wyoming, have invented certain newa-nduseful Improvements in Rotary Valves, of'which the following is a Vspecification.

This invention relates to improvements in y rotary valves.

One object of the invention is to provide such a valve which may beadapted Vfor various purposes, and 1in which Vthe provision of packingelements to insure against leak- VAnother object of the inventionv is toprovide a valve of this character which,`

when used inthe placeof the conventional form of slide valve `forlocomotive cylinders,

may be plugged so that upon blowing out or breakage of either end ofthe-cylinder,

which would ordinarily render the .same'entirely inoperative, theremainingjend thereof may be used to its full capacity.

A further -object'of the invention is to provide va valve of thischaracter which may be Alubricatedregardless of.` .the pressurethereagainst, and to providenovel means to accomplish such lubrication.

its arrangement with respect `to. lthe feed.

and exhaust-ports ofthe cylinder.

Fig. 3 is a sectional view taken on thevv line 3-3 o fFig. l.

ig. 4 is another sectionalview takenon the line /l-Arfof Figcl.:

Fig. 5 isa sidef elevation of the valve member; 5

yFig. Gis a'detail perspective view ofthe `valve member. I Y eferring tothe drawings -byj numerals and more particularly. to Figs. "1' and.-2,1.1

hasl mounted thereon construction and is provided with alongivSpeceationlof Letters latent.

ring. A collar 14: is formed VVith the Yforegoing andother objects inview, the inventionconsists in the novelV with the tapered bore 9. theshank 12`is an arm nected a rod 17 whichk is in turn connectedV motionfor with bore 3, near the front Serial N0. 378,658.

tudinal bore 3 within which is arranged a piston head 4 .for slidingmovement.

n enlargement 5 is formed upon the casting 2 above the bore 3 and thisenlargement is provided upon its outer face with a substantiallyrectangularly shaped opening dwhich is adapted to be closed by a plate 7to form a pocket which may serve, as in the present instance, as steamchest, an opening being provided in one wall of the enlargement incommunication with the opening 6 which has communicating therewith afeed pipe 8 which extendsfrom the boiler. A longitudinally tapered bore9 is formed in the enlargement 5 with the' 'larger end Patented N ov.30, 1920. Application led February 24, 1916, Serial No. 80,255.vvRenewed May 3,1920. A

be received by the bore 10, the shank 12 extends anyV desired distancepast the inner face of the enlargement 5y and engages an opening in alug 13 formed upon the castonor may be secured tothe shank'12 in anydesired manner and between this collar face `of the enlargement isarranged'a flat expansion spring 15 which exerts a tension to normallyhold the valve in engagement Also mounted upon 16 to which is conin .anysuitable manner to the usual link operating the valve.

Ports 18 and 19 are formed in the` enlargement 5, said ports openinginto the tapered bore 9 at diametrically opposite points therein and oneof theseports communicates of the cylinder` while the other portcommunicates with said bore 3 near the rear end of the cylinder. A thirdbore 20 is formed in the casting and opens into the bore 9 ata pointintermediate thelinner open ends of the ports 18 and 19. This port l2Oextends through the casting in'any desireddirection and opens there fromto provide an exhaust. designates a portion of a. locomotivewhich avcylinder casting 2.. b `This casting'is Of-.substantiallyithe usualPorts 21 and r22 are formed in the head 11 of the valve and thesevportsopen into the outer.` fiat face of the head, being arranged in radialalinement` with respect to the center and the inner of the head andbeingoffsetwith respect to the center of the head, as is illustrated toadvantage in Fig. 2 of the drawings. These lports 21 and`22 extend inalongitudinal direction with respect to the valve and are of any desiredlength, being then extended'V at right angles to themselves and openinginto the outer face of the head. The ports 1.8 and 19 are offsetlongitudinally to the bore 9 relative to the port 21, and the ports anoffset portion which isa-rranged 1n alinement with the ports-18 and 19,the

vgrooves 23 and 24 proper being arranged in alinement with. the port 20.

v By an arrangement of ports as just described, it will beA noted thatas the valve is oscillated the offset portions 25 ofthe grooves 23 and24 will alternately aline with 1the ports 18^and 19 while the oppositeends of the grooves will alternately aline with the port 20. Also theports 21 and 22 will alternately aline with ports 19 and 18respectively. lWhen the port 21 is alined with the port 19 the groove 23provides a communication between the port 18 and the port 20. Likewisewhen the port-22 communi- Y cates with the port 18 the groove 24'forms acommunication between the port 19 and theport 20. It is obvioustherefore that when the Vport 21 is alined with the port'19 the pistonhead 4 will be moved in one direc' tion, the steam upon its oppositeside being exhausted through the port'18,l groove 23 and -port 20.VVVhen'the piston'reaches the end of its stroke the linkmotion willoperate to move the valve to aline the port 22- with the port 18 and thegroove 24 with the port 19 andport 20. This willl cause the steam toflow through the port 18and force the piston head in an oppositedirection whereupon the dead steam to its opposite face will be forcedthrough the portV 19, groove 24 and out through the exhaust ort 20. YShould the cylinder head blow out or be'- operation of the engine theport 22 may be plugged. This will cause the steam within the'pocket orsteam chest to act only upon the rear face of the piston in as efficienta manner as would be accomplished were the port 22 open; Likewise theport 21 may be plugged and the forward end ofthe cylinder will operateto its full capacity.

A recess 26 is formed in the enlargement, said recess 26 communicatingwith the straight bore 10, while a reduced bore 27 is formed Vin theenlargement and opens into oneouter face thereof and isin communicationwith the recess, being normally Vclosed by means of a plug 28. Byfilling the recess 2G with grease or oil,roscillat ion of the valve willcause the grease or oil to be distributed over the faces of the valve,and `thereby insure its thorough-lubrication. In order to prevent thisgrease or oil from draining from the recess 26 about the shank 12 apacking nut 29 is provided, which -nut is threaded into an opening inthe inner face of the enlargement and has a packing materialarranged tobe'compressed against theV shank.

In Figs. 3 and 4 of the drawings we have shown a valve of substantiallythe same design as that disclosed-in Figs. 1v and 2 of l the drawings.`This construction serves to adapt the valve for various purposes otherthan as a valve for feeding steamto locomotive cylinders. c

a'longitudinally extending tapered' bore 31 within which is arranged thetapered headV 32 of the valve, the same being providedV with a shank 33having an angular head 34 in the shape of an isosceles triangle.Ahalidle 35 having lan opening therein of a size to snugly receive theangular head 34 is mounted upon the head in any suitable man# ner andthis handle has abutting against itsy with an opening 38 in thesidewallV of the casing whereby communication may be establishedy betweenthe interior of the casing and -theopening`38-`v A threaded opening 39is formed in `one side ofthe casing Vand this opening communicates withthe tapered bore 31. A. plugmay be provided for closing this opening oragrease cup40 lmay be'threaded therein' to supply a lubricant to thewearing surfaces of thevalve.

It will be notedtha't, by` the provision of an angularhead of isoscele'striangular j shape, it .is impossible to place the handle come' damagedin any manner as to prevent 35 upon the shank except in one position.This provides means whereby a mark upon the casing may serve as a guide-to the operator of the valve so that he may determine the direction andthe necessary rotary move-v operation of the improved rotary valve maybe clearly understood, andvwhile we have 130 under face a helical"expansion spring 36 f herein shown and described one specific embodimentof our invention, We do not Wish to be limited thereto, except for suchlimitations as the claims may impart.

le claim:

l. A valve structure comprising a casing provided with an inlet port andhaving a valve seat formed therein, delivery ports opening into saidseat at points diametrioally opposite, an exhaust port opening into saidseat at a point intermediate said delivery ports and offsetlongitudinally of the seat With respect to said delivery ports,

a valve plug rotatably mounted in said seat, inlet ports extendingYlongitudinally through said plug, and opening at their outer ends intosaid casing, the inner ends of said inlet port being extended at anangle to open into the side face of the plug for registration With saiddelivery ports, and exhaust ports extending circumferentially aroundsaid plug, each of said exhaust ports having one end thereof disposedfor registration with the exhaust and the opposite end thereof extendedlongitudinally of the valve for registration at times With one of thedelivery ports.

2. A valve' structure comprising a casing port 1n sald caslng providedwith an inlet port and having a tapered valve seat formed therein,delivery ports opening into said valve seat at points diametrioallyopposite, an exhaust port opening into said valve seat, at a pointintermediate but'offset longitudinally from said inlet port, a taperedvalve plug rotatably mounted in said seat, inlet ports extendinglongitudinally through said plug from the larger end thereof and openinginto the side face of the plug for registration with the said deliveryports, and a plurality of substantially L-shaped exhaust grooves formedin the tapered face of said plug and having the longer legs thereofextending circumferentially of the plug and disposed for registrationWith the exhaust port in the casing, the shorter legs of said groovesbeing extended longitudinally of the plug for registration at times withthe delivery port.

In testimony whereof We aix our signatures in presence of tWo Witnesses.

THOMAS OGDEN.k LAYTON WARE.

Witnesses EDGAR T. EAvEs, J. BEvING'roN.

